.my-alert{
    width:250px;
    height:80px;
    border: 1px solid #989898;
    background: rgba(197, 197, 197, 0.7);
    border-radius: 10px;
    text-align: center;
    line-height: 80px;
    z-index: 5;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -125px;
    margin-top: -40px;
    font-size: 18px;
}
.fileinput-button {
    position: relative;
    display: inline-block;
    overflow: hidden;
}

.fileinput-button input{
    position:absolute;
    right: 0px;
    top: 0px;
    opacity: 0;
    font-size: 100px;
}